CN107032090B

CN107032090B - Lump separating and conveying device

Info

Publication number: CN107032090B
Application number: CN201610974763.5A
Authority: CN
Inventors: 马尔科·贝塔格诺; 勒内·吉西; 马克·詹金斯; 丹尼尔·马蒂; 托马斯·施陶费尔; 弗朗茨·霍斯泰特勒
Original assignee: Schleuniger Holding AG
Current assignee: Schloynig AG
Priority date: 2015-11-06
Filing date: 2016-11-04
Publication date: 2020-03-10
Anticipated expiration: 2036-11-04
Also published as: JP2017088409A; EP3165481A1; CN107032090A; EP3165481B1; CH711761A2; DE102016221373A1; JP6872881B2

Abstract

The invention relates to a lump separating and conveying device. A device (7) for separating the pieces from the charging container (1) and conveying them to a discharge position has a negative pressure nozzle (8) for sucking the pieces, which generates a liquid flow for conveying the pieces. A liquid-permeable block-receiving plate (10) is arranged in the liquid flow in the region of the discharge point. The liquid channel (11) is conveyed from a position downstream along the receiving plate (10) to a region close to the inlet of the negative pressure nozzle (8). Typically, the device (7) is used as a device for installing a splice box on a cable, comprising a charging container (1) for receiving a number of loose splice boxes. The cable bushing in the charging container is separated by means of a device (7) and transported by means of a transport device (5) to a mounting position of a mounting device for mounting the transported cable bushing on a cable.

Description

Lump separating and conveying device

Technical Field

The invention relates to a device for separating blocks and for transferring them from a filling container to an output position according to the preamble of claim 1 and a device for installing a cable sleeve on a cable according to the preamble of claim 10.

Background

Containers of this type are often used in connection with installations for installing splice trays on cables, for which a large number of loose splice trays are prepared in the container for separation by a conveying device and for transport to an installation site for installing splice trays on cables. For example, suction and insufflation delivery devices have been disclosed, but such devices have relatively high noise and require relatively more energy during operation.

Typically, such devices comprise, near the bottom of the container, a nozzle under pressure which generates a flow of liquid for sucking the mass and for conveying it. The nozzle has an essentially vertically upward spray direction. Furthermore, a liquid-permeable block receiving plate is arranged above the block discharge position.

WO9708787a1 discloses a device of this type for conveying and placing sealing rings which are mounted on a conductor, for example an optical conductor. The device comprises a sorting unit with a container, and a duct is arranged at the lower part of the sorting unit, the duct sucks a sealing ring through a Venturi structure and conveys the sealing ring to an upper area by air flow. Then, the seal ring is dropped onto the partition wall between the upper and lower portions. The partition wall has an opening of adjustable cross section through which the sealing ring is dropped onto the sealing ring transport unit or is returned to the lower region through the opening. The number of sealing rings is adjusted by special mechanical solutions which take a long time and are expensive and require additional actuators.

WO2011158145a1 discloses another conveying device comprising a continuous annular conveying unit which projects into the charging container and a receiving unit which is fixed to the inside of the annular conveying unit and is intended to receive a cable bushing. With such devices, individual pieces of charge may become trapped in the moving parts, which may result in damage to the charge and/or damage to the equipment.

In order to be able to carry out simple delivery without the need for separation for the cannula arrangement and delivery to further delivery devices, EP023905a1 describes a device for dispensing and delivering solid parts. The apparatus comprises a flow chamber in which the solid components are arranged and transported in a predetermined direction. For this purpose, coanda nozzles are used in order to transport the solid parts.

Disclosure of Invention

The object of the invention is to create a device for separating and conveying blocks from a charging container, by means of which a trouble-free, quiet operation can be achieved and the blocks can be conveyed and separated in an energy-efficient manner. The same task is also solved for the device for installing a splice box on a cable.

The above object is achieved by the features of the characterizing part of the

independent claim

1 or 10. Further features are described in the subclaims, the description and the figures.

According to the invention, the device for separating and conveying blocks from a charging container is characterized in that the receiving plate is impenetrable for the blocks and in that the receiving plate is at an angle (non-zero degree), in particular at an obtuse angle, to the horizontal. With such a system, small to medium-sized blocks, such as cable bushings, can be transported without mechanical loading and without the risk of seizing. The gas and energy consumption is lower than that of the disclosed embodiment, and the time can be accurately controlled. The number of sealing rings delivered to the outlet position can be adjusted by means of a control valve alone, which controls the air flow of the nozzle, so that no additional devices are required. Typically, the receiving plate is arranged essentially vertically, that is to say essentially at right angles to the horizontal, and the air flow is essentially perpendicular to the receiving plate.

The negative pressure nozzle is preferably a nozzle according to the coanda principle, a venturi nozzle or a vortex nozzle.

According to a further embodiment of the invention, it is provided that the output position and the receiving plate are arranged in the top region of the device. The entire lower region of the device can thus be used for storing the sealing ring, so that the device can be made as compact and compact as possible. This also simplifies the transport of the components transported and separated from the charging container to the further transport device.

The interior of the charging container is preferably free from disturbances or obstacles to the components forming the annular liquid flow from the underpressure nozzle to the receiving plate, further back to the bottom of the charging container and back to the underpressure nozzle. In particular, horizontally oriented parts should be avoided in order not to hinder the upward blowing or transport of the sealing ring in the liquid flow to the discharge position, on the one hand, and also not to hinder the return of unserviced sealing rings into the charging container, on the other hand. Whereby no clogging at all occurs.

According to a further variant of this embodiment, if at least the inflow opening of the receiving plate and the liquid channel, and preferably also the outflow position of the separated pieces, are arranged offset with respect to the outflow opening of the underpressure nozzle, seen in the vertical direction, it is possible to avoid that the fed-out charge parts fall into the nozzle, whereby the probability of malfunction can be further reduced.

According to another embodiment of the invention, a blowing nozzle, preferably with variable gas flow direction, is present at a distance from the underpressure nozzle and essentially at the same height. The blow nozzle is preferably located on the opposite side of the device. This generates an air flow which directs the pieces in the direction of the inlet of the underpressure nozzle and/or blows the pieces away in the lower region of the device and of the charging container. In particular, the suction of the cake can be assisted when the charge is low.

A particular embodiment of the invention is characterized by a liquid passage separate from the inner space of the charging container containing the charge, which passage runs downstream from a point along the receiving plate to the area near the inlet of the underpressure nozzle.

A further advantageous variant of the invention is characterized in that at least one outflow opening of the liquid channel is arranged close to and below the level of the suction opening of the underpressure nozzle, for which purpose the diameter of each outflow opening is preferably smaller than the smallest dimension of the block. This simplifies the spreading process when starting the feed of the charge and makes it possible to move the mass in the direction of the nozzle. Based on the size of the mass part, the mass part can be prevented from entering the outflow opening by dimensioning the nozzle opening.

According to an alternative of the invention, there is at least one set of adjacently arranged liquid channel outflow openings near and horizontally below the suction opening of the underpressure nozzle.

The device according to the above solution can also be used for a device for fitting a splice box to a cable. For this purpose, a charging container for accommodating a plurality of loose cable sleeves is provided, as well as a device for separating the cable sleeves in the charging container and for transporting the separated cable sleeves to the installation location and a mounting device for mounting the transported cable sleeves on the cable.

Drawings

In the following, the invention is explained in more detail on the basis of the figures.

Wherein:

figure 1 shows a perspective view of a device according to the state of the art comprising a charging container for accommodating a splice box and a device according to the invention for transporting, separating and further transporting a splice box,

figure 2 shows a perspective view of the device according to the invention for the same purpose,

figure 3 shows a perspective view of the device for separating and conveying blocks in a charging container in figure 2,

figure 4 shows a cross-sectional view of the device of figure 3 along the height of the centre plane of the underpressure nozzle,

fig. 5 shows a front view of the device of fig. 3 and 4.

Detailed Description

Fig. 1 shows a commercially available device in the form of a device part for installing a cable bushing on a cable. The cable bushing is accommodated in the charging container 1 in a loose pile. The transport device 2 receives the splice box through the opening 3 in the lower part of the partition wall 4 and transports it in the vertical direction upwards to the transport position of the transport device 3 in the upper region of the device 5 for further transport to the installation position for installing the splice box on the cable. The conveying device 2 has a continuous endless conveying unit, for example an endless conveyor belt with loops for receiving the charge material, which projects into the charging container 1 and is driven by a drive 6 outside, preferably at the top, of the conveying device 2.

As shown in fig. 2, the device 7 according to the invention for separating and conveying blocks from a charging container to an output position can be used in the same way as the conveying device 2 for installing a splice box on a cable. Since no motor-driven mobile conveying unit is required, the use of expensive and complex drive devices 6 and the like on the device 7 can be avoided, so that a compact and trouble-free design can be achieved. The blocks to be delivered can be passed from the charge container 1 through the opening 3 in the partition wall 4 into the region of the device 7 in the same manner as described above (see fig. 3).

According to the invention, the device 7 has a negative pressure nozzle 8 for sucking in the cake. The negative pressure nozzle is preferably based on the coanda principle, but a venturi nozzle or a swirl nozzle can also be used. The negative pressure nozzle 8 is preferably arranged in the area close to the bottom of the charging container 1 or essentially in a position above the level of the bottom. In the case of coanda nozzles, the liquid movement of the surrounding area is generated by the outer wall adsorption of a liquid or a jet of gas having a relatively high velocity, a small amount of pressurized air having an ultrasonic velocity being pressed through the inner nozzle ring and being conveyed from the outside of the device 7 through a pipe. A vacuum state can thereby be created and a large amount of ambient or "free" air can be sent out together with the mass via the nozzle 8. The advantage of this principle is that in the event of a blockage of the gas flow, the fluid returns, i.e. only a small back pressure is built up.

Since the typical solution is that the delivery or delivery point is located in the top area of the device 7, the longitudinal axis of the underpressure nozzle 8, which determines the direction of the air flow for delivering the mass to the delivery point, is essentially vertical and faces the upper edge of the charging container. Thus, as shown in fig. 4, the longitudinal axis of the negative pressure nozzle is slightly inclined to the normal, for which purpose the longitudinal axis is preferably directed outwards, in order to generate an upward gas flow against the inner wall 9 of the device 7.

In the region of the outlet point for the liquid flow for conveying the cake, a liquid-permeable cake receiving plate 10 is arranged, at which the cake collides and falls vertically downwards after the formation of the block. The device 5 for further feeding of the cable bushing projects into the device 7 in a lower region close to the receiving plate 10 and receives the falling block element. The receiving plate 10 is preferably a funnel-shaped plate with fine openings essentially perpendicular to the horizontal plane and at the same time perpendicular to the liquid flow or also a fine wire mesh. The receiving plate 10 can thus be used for the penetration of the liquid flow, but not for the passage of the block, which is separated from the liquid flow by the receiving plate, is retarded and transported by gravity to the output position below.

In addition to the receiving plate 10, there are no parts in the inner region of the device 7 that could impede, divert or interrupt the flow of liquid. In particular, the presence of essentially horizontally oriented components, partition walls or the like is to be avoided.

According to one embodiment of the invention, the liquid channel 11 runs downstream from a point down the receiving plate 10 in the top area of the device 7 where the output point of the receiving plate 10 and the cable bushing is located. The liquid channel 11 is not absolutely necessary, but when present it extends down the inner wall of the device 7 to the bottom level of the device 7 or the charging container 1. The liquid channel 11 preferably continues to a region close to the inlet of the underpressure nozzle 8. A part of the circulating air flow is conveyed through this liquid channel 11, whereby the air sucked in through the delivery nozzle 8 can improve the delivery efficiency of the device 7, in particular when the filling position of the cable bushing exceeds the suction opening of the negative pressure nozzle 8.

In order to simplify the further transport of the cake, the discharge position, the receiving plate 10 and the inflow opening of the liquid channel 11 can preferably be arranged not only in the top region of the device 7, but also, viewed in the vertical direction, in a staggered arrangement relative to the upward outflow opening of the suction nozzle 8.

As shown in fig. 4, at least one outflow opening 12 of the liquid channel 11 is arranged close to the suction opening of the underpressure nozzle 8 and in a position below its level. The diameter of each outflow opening 12 is preferably smaller than the smallest dimension of the block. Furthermore, it is also possible to alternatively arrange the outflow openings 12 of at least one group of adjacent liquid channels 11 close to the suction opening of the negative pressure nozzle 8 and in a position below the level thereof.

By means of the negative pressure nozzle 8, preferably in combination with a single or a plurality of outflow openings 12, an essentially annular air circulation for conveying the cake can be formed in the device 7. In this connection, air is sucked up together with the cake from the negative pressure nozzle 8 into the horizontal plane below the opening, accelerated upwards by the negative pressure nozzle 8 and blown out in the upper region of the device 7. In this upper region, the lumps are deflected and at the same time are conveyed to the device 5 for further conveyance, and the other air flow is returned to the lower region of the device again on the side of the device opposite the nozzle 8, in particular via the liquid channel 11.

Finally, an additional blowing nozzle 13 may also be present and blow the cake in the lower region of the device 7. The blow nozzles 13 are supplied with pressurized air through a pipe outside the device 7. This makes it possible to blow the cable jacket to the opening of the vacuum nozzle 8 or to break up lumps which have entered the lower region of the device 7 from the charge material container 1. The direction of the blowing nozzle 13 is preferably adjustable, typically with the nozzle pointing downwards.

In order to control and improve the upward air flow of the underpressure nozzle 8 and the separated and conveyed lumps, a guide plate 14 or slot is connected above the underpressure nozzle 8 and parallel to the inner wall 9. The guide plate 14 is arranged obliquely in the upper region of the device 7 and forms an upwardly expanding channel. The slots which may be used also have an upward expansion in the upper region of the device 7 in the same way.

List of reference numerals

Charging container 1

Conveying device 2

Opening 3

Partition wall 4

Transport device 5

Drive device 6

Device 7

Negative pressure nozzle 8

Inner wall 9

Receiving plate 10

Liquid channel 11

Outflow opening 12

Blowing nozzle 13

Claims

1. Device (7) for separating and transporting pieces from a charging container (1) to an output position, with a negative pressure nozzle (8) generating a liquid flow for sucking the pieces and transporting the pieces, and a liquid-permeable piece receiving plate (10) arranged above the output position of the pieces, said negative pressure nozzle being near the bottom of the charging container (1) and having an essentially vertical upward gas flow direction, characterized in that the receiving plate (10) is impermeable for the pieces and that the receiving plate is at an angle to the horizontal.

2. Device according to claim 1, characterized in that the negative pressure nozzle (8) is according to the coanda principle, or a venturi nozzle or a vortex nozzle is used.

3. Device according to claim 1 or 2, characterized in that the output position and the receiving plate (10) are arranged in the top area of the device (7).

4. The device according to claim 1 or 2, characterized by means for the interior of the charging container (1) to be free from disturbances or to hinder the formation of an annular liquid flow from the underpressure nozzle (8) to the receiving plate (10), further back to the bottom of the charging container (1) and back to the underpressure nozzle (8).

5. Device according to claim 1 or 2, characterized in that at least the inflow openings of the receiving plate (10) and the liquid channel (11) are arranged offset with respect to the outflow opening of the underpressure nozzle (8) seen in the vertical direction.

6. Device according to claim 1 or 2, characterized in that at a distance from the underpressure nozzle (8) and at the same height there is a blowing nozzle (13) with a variable air flow direction.

7. The device as claimed in claim 1 or 2, characterized by a liquid channel (11) which is separate from the interior space of the charging container (1) containing the charge material and which runs downstream from a point along the receiving plate (10) to a region near the inlet of the underpressure nozzle (8).

8. Device according to claim 7, characterized in that there is at least one set of adjacently arranged liquid channel (11) outflow openings (12) near and below the level of the suction opening of the underpressure nozzle (8).

9. Device according to claim 8, characterized in that there is at least one set of adjacently arranged liquid channel outflow openings (12) near and below the level of the suction opening of the underpressure nozzle (8).

10. The apparatus of claim 1, wherein the receiving plate and the horizontal plane form an obtuse angle.

11. The device according to claim 4, characterized in that the interior of the charging container (1) is free from disturbances or obstacles to horizontally running parts forming an annular liquid flow from the underpressure nozzle (8) to the receiving plate (10), further back to the bottom of the charging container (1) and back to the underpressure nozzle (8).

12. Device according to claim 5, characterized in that the output position of the separated pieces is arranged offset with respect to the outflow opening of the underpressure nozzle (8) seen in the vertical direction.

13. Device according to claim 6, characterized in that on the opposite side of the device (7) there is a blowing nozzle (13) with a variable direction of the gas flow.

14. Device according to claim 8, characterized in that the diameter of each outflow opening (12) is smaller than the smallest dimension of the block.

15. Device for installing a splice cable bushing on a cable, comprising a charging container (1) for accommodating a number of loose splice cable bushings and a device (7) for detaching a splice cable bushing from the charging container and for transporting the detached splice cable bushing to an installation location and a mounting device for installing the transported splice cable bushing on the cable, characterized in that the device (7) for detaching and transporting the block from the charging container (1) to an output location is in accordance with any one of claims 1 to 14.